Fire extinguishers. Sale of fire extinguishers
Unlike big explosions or the fires, most often everything begins with small seats of fire which can be eliminated by means of fire extinguishers which have to settle down near workplaces. All fire extinguishers differ from each other in contents, use and action. Fire extinguishers are subdivided on powder, carbon dioxide, foamy, etc.
Fire extinguishers have color marking in order that crew members could determine quickly and easily by color fire extinguisher contents. Red color corresponds to water, blue - to dry powder and black color of marking - to the carbon dioxide fire extinguisher. If there is no color of marking it is necessary to read the instruction to know fire extinguisher contents. Fire extinguishers have to be always ready to action, are easy to use.
Powder fire extinguishers
Let's consider powder fire extinguishers with a gas cylinder: consist of the steel cylinder with powder. The category of the fire extinguisher is made by means of the operating mechanism. Working part type of a uniform of the drummer. Mechanism of operation of the fire extinguisher: the needle punctures a membrane, gas presses on the case, the valve opens and powder moves ahead on a hose. Powder fire extinguishers often use against the fires of a class A, HUNG.
It is desirable to extinguish fire from a windward side, wind will help. A large amount of the powder which is let out from the fire extinguisher can cause irritation of a nasopharynx and eyes therefore as soon as fire is put out, it is necessary to stop powder dispersion. Working with powder fire extinguishers it is necessary to take measures of protection.
Carbon dioxide fire extinguishers
The principle of operation of carbon dioxide fire extinguishers reminds powder, carbonic acid as well as powder is under pressure. The carbon dioxide fire extinguisher consists from gas, a pin for transfer, a bell, the isolated handle, the shipped tube and the valve. It is used at the fires of classes B is. WITH does not sustain combustion, reducing a flame. Injecting it into fire, the big cloud is created and extinguishes fire. It is desirable to attack a flame from a windward side. Carbon dioxide can make on the person suffocating impact, in big concentration therefore it is better to steer clear of the seat of fire after the flame is extinguished.
Foamy fire extinguisher.
Foam creates such covering which stops access of oxygen to fire. Various foamy solutions it is easier, combustible oils therefore the layer is created, stopping fire supply with oxygen. Such fire extinguishers cannot be used to suppression, electroinstallations which are energized.